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updating local files
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‎HtmlDomHandler.php‎

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‎ImageHandler.php‎

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<?php
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/*
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* Copyright (c) 2025 Bloxtor (http://bloxtor.com) and Joao Pinto (http://jplpinto.com)
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*
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* Multi-licensed: BSD 3-Clause | Apache 2.0 | GNU LGPL v3 | HLNC License (http://bloxtor.com/LICENSE_HLNC.md)
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* Choose one license that best fits your needs.
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*
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* Original PHP Html Dom Lib Repo: https://github.com/a19836/phphtmldomlib/
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* Original Bloxtor Repo: https://github.com/a19836/bloxtor
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*
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* YOU ARE NOT AUTHORIZED TO MODIFY OR REMOVE ANY PART OF THIS NOTICE!
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*/
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include __DIR__ . "/MimeTypeHandler.php";
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class ImageHandler {
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const IMAGE_DOES_NOT_EXIST = 1001;//Unsupported picture type!
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const UNSUPPORTED_IMAGE_TYPE = 1002;//Unsupported picture type!
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const IMAGE_IS_TOO_SMALL = 1003;//Picture is too small!
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const IMAGE_WITH_WRONG_ASPECT_RATIO = 1004;//Picture has wrong aspect ratio
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private $errors = array();
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private $allowed_extensions = array('bmp', 'gif', 'jpeg', 'jpg', 'png');
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public function __construct() {
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}
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public function getErrors() {
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return $this->errors;
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}
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public function isImageValid($src_path) {
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$this->errors = array();
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if (!$src_path || !file_exists($src_path)) {
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$this->errors[] = self::IMAGE_DOES_NOT_EXIST;
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return false;
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}
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$mime_type = MimeTypeHandler::getFileMimeType($src_path);
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if (!MimeTypeHandler::isImageMimeType($mime_type)) {
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$this->errors[] = self::UNSUPPORTED_IMAGE_TYPE;
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return false;
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}
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$type = MimeTypeHandler::getTypeByMimeType($mime_type);
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$extension = $type && isset($type["extension"]) ? $type["extension"] : substr(strrchr($src_path, "."), 1);
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$parts = explode(",", $extension);
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$extension = trim(strtolower($parts[0]));
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$allowed_extensions = MimeTypeHandler::getAvailableFileExtensions("image");
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$allowed_extensions = is_array($allowed_extensions) && $allowed_extensions ? $allowed_extensions : $this->allowed_extensions;
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return in_array($extension, $allowed_extensions);
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}
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public function isImageBinaryValid($src_path) {
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$status = $this->isImageValid($src_path);
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if ($status && getimagesize($src_path) === false) {
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$this->errors[] = self::UNSUPPORTED_IMAGE_TYPE;
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$status = false;
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}
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return $status;
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}
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public function imageResize($src_path, $dst_path, $width, $height, $crop = false, $force_resize = false) {
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if (!$this->isImageBinaryValid($src_path))
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return false;
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$status = false;
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$extension = $this->getFileExtension($src_path);
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switch($extension){
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case 'bmp':
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$img = imagecreatefromwbmp($src_path);
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break;
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case 'gif':
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$img = imagecreatefromgif($src_path);
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break;
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case 'jpeg':
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case 'jpg':
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$img = imagecreatefromjpeg($src_path);
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break;
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case 'png':
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$img = imagecreatefrompng($src_path);
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break;
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default :
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$this->errors[] = self::UNSUPPORTED_IMAGE_TYPE;
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return false;
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}
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if ($img) {
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list($w, $h) = getimagesize($src_path);
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if ($w != $width || $h != $height) {
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if (($width > $height && $w < $h) || ($width < $height && $w > $h))
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$this->errors[] = self::IMAGE_WITH_WRONG_ASPECT_RATIO;
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// resize
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if($crop) {
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if($w < $width || $h < $height)
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$this->errors[] = self::IMAGE_IS_TOO_SMALL;
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$ratio = max($width / $w, $height / $h);
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$h = $height / $ratio;
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$x = ($w - $width / $ratio) / 2;
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$w = $width / $ratio;
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}
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else {
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if($w < $width && $h < $height)
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$this->errors[] = self::IMAGE_IS_TOO_SMALL;
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$ratio = min($width / $w, $height / $h);
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$width = $w * $ratio;
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$height = $h * $ratio;
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$x = 0;
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}
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//only resize if image is not too small, otherwise is not worth it.
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if (!in_array(self::IMAGE_IS_TOO_SMALL, $this->errors) || $force_resize) {
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$new = imagecreatetruecolor($width, $height);
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if ($new === false)
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return false;
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// preserve transparency
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if($extension == "gif" || $extension == "png") {
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imagecolortransparent($new, imagecolorallocatealpha($new, 0, 0, 0, 127));
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imagealphablending($new, false);
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imagesavealpha($new, true);
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}
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if (imagecopyresampled($new, $img, 0, 0, $x, 0, $width, $height, $w, $h))
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switch($extension){
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case 'bmp':
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$status = imagewbmp($new, $dst_path);
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break;
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case 'gif':
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$status = imagegif($new, $dst_path);
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break;
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case 'jpeg':
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case 'jpg':
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$status = imagejpeg($new, $dst_path);
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break;
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case 'png':
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$status = imagepng($new, $dst_path);
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break;
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}
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if (function_exists("imagedestroy"))
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@imagedestroy($new);
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}
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else //if is smaller than the user width/height, simply copy image to $dst_path
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$status = copy($src_path, $dst_path);
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}
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else //if width and height are the same, simply copy image to $dst_path
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$status = copy($src_path, $dst_path);
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if (function_exists("imagedestroy"))
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@imagedestroy($img);
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}
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return $status;
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}
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public function areImageMeasuresValid($src_path, $width, $height, $crop = false) {
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if (!$this->isImageBinaryValid($src_path))
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return false;
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list($w, $h) = getimagesize($src_path);
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if($crop && ($w < $width || $h < $height)) {
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$this->errors[] = self::IMAGE_IS_TOO_SMALL;
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return false;
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}
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else if(!$crop && $w < $width && $h < $height) {
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$this->errors[] = self::IMAGE_IS_TOO_SMALL;
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return false;
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}
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if (($width > $height && $w < $h) || ($width < $height && $w > $h)) {
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$this->errors[] = self::IMAGE_WITH_WRONG_ASPECT_RATIO;
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return false;
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}
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return true;
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}
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private function getFileExtension($src_path) {
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$mime_type = MimeTypeHandler::getFileMimeType($src_path);
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$type = MimeTypeHandler::getTypeByMimeType($mime_type);
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$extension = $type && isset($type["extension"]) ? $type["extension"] : substr(strrchr($src_path, "."), 1);
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$parts = explode(",", $extension);
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return trim(strtolower($parts[0]));
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}
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}
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/*
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$pic_type = strtolower(strrchr($picture['name'],"."));
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$pic_name = "original$pic_type";
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move_uploaded_file($picture['tmp_name'], $pic_name);
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if (true !== ($pic_error = @ImageHandler::imageResize($pic_name, "100x100$pic_type", 100, 100, 1))) {
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echo $pic_error;
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unlink($pic_name);
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}
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else echo "OK!";
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*/
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?>

‎LICENSE.md‎

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This is **multi-licensed**. You may choose to use it under **one of the following licenses**:
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- **BSD 3-Clause License** or
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- **Apache License 2.0** or
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- **GNU LGPL v3** or
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- **[HLNC License](http://bloxtor.com/LICENSE_HLNC.md)**
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Select the license that best fits your needs.
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**This is 100% open to your needs!**
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© 2025 [Bloxtor](http://bloxtor.com) and [Joao Pinto](http://jplpinto.com)

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